Effect of zirconia frame thickness on fracture toughness of veneer porcelain

Momoko Kudo, Shoko Miura, Masafumi Kikuchi, Ryoichi Inagaki, Joonho Cho, Keiichi Sasaki, Masanobu Yoda

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review


This review article focused on the influence of the zirconia thickness on the strength of the veneer porcelain, which was evaluated with a fracture toughness test according to JIS R 1607. The veneer porcelains for the zirconia all-ceramic crown were fired on two different thicknesses (0.4 mm and 0.8 mm) of zirconia frames (ZAC). As the controls, veneer porcelains fired on metal frames for porcelain fused to metal crown (PFM) were used. The fracture toughness value evaluated by measuring the extent of cracking associated with a Vickers indentation on the veneer porcelain part was significantly larger at the points of 1.5 mm in 0.4 mm thickness frame of ZAC samples compared with in the 0.8 mm frame.

Original languageEnglish
Title of host publicationInterface Oral Health Science 2011
PublisherSpringer Japan
Number of pages3
ISBN (Electronic)9784431540700
ISBN (Print)9784431540694
Publication statusPublished - 2012 Jan 1


  • Fracture toughness
  • Veneer porcelain
  • Vickers indentation
  • Y-TZP
  • Zirconia all-ceramic


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